Thread: Coolant flow through TB?

Which side did you tap into?

unhook both lines, feed one line to each coolant port on the turbo. Nothing runs through the TB anymore, don't really need it there anyway.

Brent

Hmm.. depending on where you live you may need the lines going through the TB.. The coolant lines keep the TB from freezing open in cold climates.. If you live somewhere where it falls below freezing and youre driving on the freeway for a while at a constant speed, then the throttle body freezes open.. and...

Well, if you live in an area where it gets down to freezing temperatures, you need that coolant running through the throttle body, to prevent the throttle plate from freezing shut. So, doing a throttle body bypass is not the best idea.

Here's a thread that may be helpful in finding which hoses go where..

http://www.sr20-forum.com/naturally-aspirated-all-motor/9604-how-b14-throttle-body-heater-bypass.html

Thanks, I am in chicago so I do need coolant going through the TB. Also garrett says it does matter which ends go into the TB to create a thermal siphon effect when the car is off.

Looks like it is right to left. Would it make sense to have gravity help out the flow?

you're reading too much into it. Just hook em up and go. Thats what pretty much everyone does including myself without any issues. People even run them without coolant lines without any issues either.

I am from Northern Michigan and I ran with no coolant through the TB through 4 winters and never had an issue with the TB. The motor heat after the car warms up is enough to keep the TB from freezing up, IF any water MAY be in there to freeze. It is something that just doesn't happen from my experience and the cars I have done this to over the years.

Brent

I do not believe you can conclude from the shape of that pipe that the coolant flows from right to left. It's a very short drop, and the coolant flow depends mainly on pressure, not gravity. Your best bet is to either shoot a bit out by starting the engine or see if you can find it in the FSM.

^--- what he said. Or maybe go 'test drive' another sr20de car if you're really desperate

I won't be doing the coolant line looping myself. The throttle body is somewhat of a radiator in itself, and people have reported their cars running hotter after the mod.

I don't even need to really start the engine, just crank it a bit correct?